linux-kernel - Re: [PATCH 1/2] scsi: libsas: Make sas_notify_{phy,port}

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Message-ID: <06714ce6-40cd-653d-4e5f-4bafee355035@huawei.com>
Date:   Thu, 24 Feb 2022 13:05:01 +0000
From:   John Garry <john.garry@...wei.com>
To:     Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>
CC:     <chenxiang66@...ilicon.com>, <linux-scsi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>
Subject: Re: [PATCH 1/2] scsi: libsas: Make sas_notify_{phy,port}_event()
 return void

On 24/02/2022 12:43, Damien Le Moal wrote:
> On 2/24/22 20:04, John Garry wrote:
>> Nobody checks the return codes, so make them return void. Indeed, if the
>> LLDD cannot send an event, nothing much can be done in the LLDD about it.
> 
> It really sound like the LLDDs should be fixed to e.g. reset the adapter
> if things go south with these functions. No sure though.

But this is not an adapter fault. As an example of a scenario which we 
could be dealing with, it may be that a phyup event occurs in the 
adapter but libsas cannot allocate memory to process the event. There's 
not much the adapter/LLDD can do about that (nor does do).

> 
>>
>> Also remove prototype for sas_notify_phy_event() in sas_internal.h, which
>> should not be there.
>>
>> Signed-off-by: John Garry <john.garry@...wei.com>
>> Reviewed-by: Xiang Chen <chenxiang66@...ilicon.com>
> 
> In any case, these changes do not make anything worse :)

Thanks,

> 
> Reviewed-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>
>